查找MySQL中最低的日期(自定义)?
为了找到MySQL中最低的Date(custom),让我们首先创建一个表。创建表的查询如下:
mysql> create table FindMinimumDate-> (
-> Id int NOT NULL AUTO_INCREMENT,
-> yourDay varchar(2),
-> yourMonth varchar(2),
-> yourYear varchar(4),
-> PRIMARY KEY(Id)
-> );
使用insert命令在表中插入一些记录。查询如下:
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('21','11','2019');mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('20','10','2020');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('03','08','2014');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('04','09','2017');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('05','07','2013');
mysql> insert into FindMinimumDate(yourDay,yourMonth,yourYear) values('25','12','2016');
使用select语句显示表中的所有记录。查询如下:
mysql> select *from FindMinimumDate;
以下是输出:
+----+---------+-----------+----------+| Id | yourDay | yourMonth | yourYear |
+----+---------+-----------+----------+
| 1 | 21 | 11 | 2019 |
| 2 | 20 | 10 | 2020 |
| 3 | 03 | 08 | 2014 |
| 4 | 04 | 09 | 2017 |
| 5 | 05 | 07 | 2013 |
| 6 | 25 | 12 | 2016 |
+----+---------+-----------+----------+
6 rows in set (0.00 sec)
现在让我们找到MySQL中最低的Date(Custom)。查询如下:
mysql> select min(concat(yourYear,'-',yourMonth,'-',yourDay)) as MinimumDate from FindMinimumDate;
以下是显示最低日期的输出:
+-------------+| MinimumDate |
+-------------+
| 2013-07-05 |
+-------------+
1 row in set (0.00 sec)
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